In an experiment to see whether the amount of coverageof light-blue interior latex paint
Chapter 11, Problem 4(choose chapter or problem)
In an experiment to see whether the amount of coverageof light-blue interior latex paint depends either on thebrand of paint or on the brand of roller used, one gallonof each offour brands of paint was applied using each ofthree brands of roller, resulting in the following data(number of square feet covered).Roller Brand 1 2 31 454 446 451Paint 2 446 444 447Brand 3 439 442 4444 444 437 443a. Construct the ANOVA table. [Hint: The computationscan be expedited by subtracting 400 (or anyother convenient number) from each observation.This does not affect the final results.]b. State and test hypotheses appropriate for decidingwhether paint brand has any effect on coverage. Usea 5 .05.c. Repeat part (b) for brand of roller.d. Use Tukeys method to identify significant differencesamong brands. Is there one brand that seemsclearly preferable to the others?
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